Crushing-roll



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1 BRENNAN, Jr. GRUSHING ROLL. No. 488,867. j Patented Dec. 27,1892.

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(No Model.) -2 sheets-4811861; 2'.

D. BRENNAN, Jr.

- I GRU'SHING ROLL.

No. 488,867. Patented Dec. 27, 1892.

5 WITNESSES: INVENTOH:

UNITE STATES ATENT FF Q DANIEL BRENNAN, JR, OF BAYONNE, NEW JERSEY.

CRUSHlNG-ROLL.

SPECIFICATION forming part of Letters PatentNo. 488,867, dated December27, 1892.

Application filed February 20, 1892. Serial No. 422,257. (No model.)

To all whom it may concern/.-

Be it known that 1, DANIEL BRENNAN, J r., of Bayonne, in the county ofHudson and State of New Jersey, have invented a new and ImprovedCrushing-Roll, of which the following is a full, clear, and exactdescription.

The invention relates to crushing rolls consisting of a center or coreand a removable shell which may be renewed when worn.

The object of the invention is to improve crushing rolls of thischaracter, to the end that the shell may be accurately and securelyfixed to the center without the necessity of boring the former, andreadily removed when WOIII.

The invention is distinguished by a novel manner of arranging andsecuring the wedge blocks, and by a keeper, which assures the properposition of the shell longitudinally of the center, all as hereinafterparticularly described and defined in the claim Reference is to be hadto the accompanying drawings forming a part of this specification, inwhich similar letters of reference indicate corresponding parts in allthe figures.

Figure 1 is a longitudinal sectional view; Fig. 2 is an end elevation,the wedge blocks being omitted, the view showing the manner of fittingthe shell on the center; Fig.3 is an end elevation of the roll complete,one half being in section; Fig.4 is a perspective View of one. of thewedge blocks; Fig 5 is a like View of the keeper block employed toprevent longitudinal play of the shell; Fig. 6 is a perspective view ofa detail, to be hereinafter referred to; Fig. 7 is a view showing theshell in longitudinal section, and the center and fastening devicespartly in section, and partly in side elevation; and Fig. 8 is an endelevation, one half being shown in section on line 8-8 of Fig. 7.

In constructing a crushing roll in accordance with my invention,reference being had specially to Figs. 1 to 6, a sleeve or hub B is caston the shaft A, the latter being formed with depressions a, into whichthe metal of the sleeve runs in being cast, the two form ing a solid,practically integral center, which term will be used hereinafter todesignate the shaft and sleeve. To the center thus formed, the shell 0is removably held by means of wedge blocks D which are held in place anddriven home by screw bolts D, the latter having engagement with nutswhich are held against movement as hereinafter explained.

The wedge blocks D are adapted to fit recesses formed partially in theexterior of the center and partially in the interior of the shell 0.Thus B, indicates the bottom walls of the recesses formed in theexterior surface of the center, said walls ranging inward in ahorizontal direction from the ends of the roll; b indicates the sidewalls of the recesses, and b lugs forming the walls at the inner ends ofsuch recesses. Within or back of each of the lugs b, a lug b is cast onthe center, in alignment with said lugs 19, and between adjacent lugs1), 19 a nut D may be fitted or cast for engaging the inner end of thebolt D. The recesses formed in the shell 0, for accommodating the wedgeblocks D have inclined bottom walls 0, and side walls 0. In connectionwith the shell and center thus constructed a keeper block E is employed,as shown best in Figs. 1 and 5, the same being of a length to fit snuglybetween two opposed shoulders c, (Fig. 1) formed on the inner surface ofthe shell at the inner terminals of the inclines O. From one side of thekeeper E, lugs E project at right angles, and are formed with threadedapertures e, which lugs fit the spaces formed by the lugs 12, b and withthe body of the keeper block fitted snugly between opposed shoulders c,the proper position of the shell longitudinally of the center or corewill be insured, and all longitudinal play prevented.

The keeper block E, may be arranged in connection withthe particularsets of lugs 29, b that will receive it most snugly, and between theremaining lugs b b the nuts D are fitted or cast. In practice, thekeeper E having been thus fitted in place on the center, the latter ispassed into the shell in the position shown in Fig. 2, and is then givena partial rotation to bring the surfaces B, O, of the shell and centeropposite each other, and at the same time the keeper E will be broughtbetween two opposing shoulders c. The wedge blocks D are now placedbetween opposing surfaces B, C', and forced home by the bolts D whichpass longitudinally therethrough and also through the lugs 19, b and thekeeper lugs E and the nuts D the inclined surfaces D of the wedge blockscausing the same to be firmly wedged in place. The heads 61 of the boltsD, lie partly below projections cl, on the wedge blocks, and a cotter orkey (1 passed through a transverse hole in said head will engage suchprojections and prevent the bolt from turning. A liner D may be employedwith advantage beneath each wedge block.

If desired,as shown in Fig. 6,and indicated in Fig. 2,at the bottom,andat the leftin Fig. 1, the inclined surfaces C, and side walls may beformed on a separate plate 0 which is fitted to the inner side of theshell, and formed with an extension 0 at the back which is received in acorresponding recess in said shell. I have shown the wedge blocks usedat both ends of the roll, but where the rolls are not long the inventionmay be embodied in the same at one end only.

It will be seen that I do not rely on the mere frictional contactbetween the wedge blocks and the opposed surfaces of the cen; ter andshell, such opposed surfaces in my improvement being flat instead offollowing the general curve of the parts, thus positively preventing anyindependent rotary move} ment of the shell, and this movement is furtherguarded against by the wedge blocks pro.- jecting into, or positivelyinterlocking with both the center and shell.

I do not claim broadly the use of a wedgelike part for securing theshell of a crushing roll to a center.

With wedge blocks constructed and arraged as described, in addition topreventing any independent movement of the shell, even under greatpressure, they also enable the shell to be accuratly set concentric tothe axis of the roll without the necessity of boring it to a properrelation to the center on which it is to be secured.

In the modified construction shown in Figs. 7 and S, the wedge blocks Dare formed with threaded apertures (1 for receiving the actuating screwbolts D said blocks being movable in longitudinal recesses 6, formed inthe center E. The bolts D pass through apertures e in the center E, andtheir inner ends cl, are reduced and held by cotters d to flanges e,that rise radially from said centers, where by the bolts are heldagainst longitudinal movement so that their rotation will actuate thewedge blocks. The enlarged heads (Z of the wedge blocks follow the linesof the center E at their backs as at e, to seat themselvs fairlythereon, and their inclined faces cl bear against corresponding surfacesC on the interior of the shell 0 The surfaces 0 on the shell incline orconverge toward the ends of the roll, and the faces 0 arecorrespondingly inclined,whereby an outward movement of the wedge blockseffect the locking of the shell, instead of an inward movement as in theform shown in Figs. 1 to 6. In securing this form the center is insertedin the shell as in the form first described, and then given a partialturn, and the bolts are turned to actuate the wedges so as to center andsecure the shell.

Having thus described my invention what I claim as new, and desire tosecure by Letters Patent, is-

1. In a crushing roll, the combination, with a center and a separateshell therefor, of interposed centering wedge blocks, and means forlocking the shell against longitudinal movement, substantially asdescribed.

2. The combination in a crushing roll, of a center, a separate shellremovably held thereon, interposed wedge blocks having flat faces andfitting corresponding surfaces formed at intervals on the center andshell, and means for securing said blocks in position, substantially asdescribed.

3. The combination in a crushing roll, of a center, a separateshellremovably held thereon, interposed wedge blocks which extend intorecesses formed in the inner surface of the shell and in the innersurface of the center, at intervals there-around, thereby positivelyinterlocking with and engaging said center and shell, substantially asdescribed.

4:. The combination in a crushing roll, of a center, a separate shellthereon, interposed wedge blocks, screw bolts for securing the wedgeblocks, and nuts with which the screw bolts engage, said nuts being heldby said center against movement longitudinally of the roll,substantially as described.

5. The combination in a crushing roll, of a center having lugs formed onits exterior, a separate shell thereon, wedge blocks interposed betweenthe shell and center, and screw bolts extending through the wedge blocksand through nuts arranged between the lugs formed on the center andengaging the inner ends of the screw bolts, substantially as described.

6. The combination in a crushing roll, of a center having fiat surfaceson its exterior at intervals there-around, a separate shell heldthereon, and having flat inclined surfaces on its inner side oppositethe flat surfaces of the center, a series of wedge blocks adapted to thefiat surfaces of both the center and shell, and screw bolts and nuts forthe wedge blocks, substantially as described.

7. The combination in a crushing roll, of a center, and a separate shellremovably held thereon, the two having opposed flat faces at intervalsthere-around at each end, and series of interposed wedge blocks adaptedto said surfaces, and means for securin g the same, the said blocksserving to accurately center the shell and serving when secured toprevent independent rotary movement thereof, substantially as specified.

8. The combination in a crushing roll, of a center, a shell removablyheld thereon, the center having recesses in its exterior and the shellhaving opposed recesses in its exterior, the bottom walls of suchrecesses being fiat,

and wedge blocks interposed between the cen+ ter and shell and extendinginto the recesses in both, substantially as described.

9. The combination in a crushing roll, of a center, and aseparate shellthereon,and means for securing the shell in place, said means includingan interposed keeper block engaging both the center and shell, andpreventing longitudinal movement of one-relatively to theother,substantially as described.

10. The combination in a crushing roll, of a center, and a separateshell thereon, and means for securing the shell in place, including aninterposed keeper block fitted between opposing shoulders on the shell,and having lugs which fit between spaced lugs on the center,substantially as described.

11. The combination in a crushing roll, of

the remainder engaging fixed nuts, substan- 3o tially as described.

DANIEL BRENNAN, JR.

Witnesses:

J. L. MCAULIFFE, EDGAR TATE.

